Humminbird 600 Series Archives

Hummingbird Fish Finder 688ci HD XD Combo Review

Hummingbird Fish Finders - 688ci HD XD Combo

Humminbird 688ci HD XD Combo

The Humminbird Fish Finder 688ci HD XD Combo is a unit that combines chartplotting functions with extreme depth fish finding capabilities. The head unit of this Humminbird is pretty much similar to the other units of the 600 series. It has a 5-inch diagonal screen, brilliant color and backlit, 480H x 640V pixel resolution. Has a power output of 1,000 Watts (RMS) / 8,000 Watts (PTP), being capable of scanning depths up to 3,000 feet.

It has Dual Beam Plus Sonar, and Xtreme Depth (that’s what the XD stands for) sonar, making available 3 distinctive operability modes: 20° coverage / 200 kHz, 60° coverage / 83 kHz, and 74° coverage / 50 kHz, for the extreme depth mode. The standard transducer included by the box is a Transom XNT 9 DB 74 T., with a Quick-Disconnect mounting kit. In-Dash mounting kits also work for this fish finder, but they’re optional. It does not have Side Imaging and Down Imaging, and does not support 360 Imaging.

This unit is also equipped with precision GPS, and the UniMap cartography package, which covers the contiguous U.S. coastline and inland waters at 30m / pixel. It can store up to 2,500 waypoints, 45 routes and 50 tracks (20,000 points each). The 688ci HD XD Combo is compatible with Lakemaster and Navionics Gold/HotMaps and can support an optional SD card for a cartography upgrade. Radar2 and NMEA2000 are also not available for this unit.

Hummingbird Fish Finder 678c HD XD Review

Hummingbird Fish Finders - 678c HD XD

Humminbird 678c HD XD

The Humminbird 678c HD XD is a unit that offers only fish finding features, and does not support any navigational features. However, it’s an extreme depth fish finder (that’s what XD stands for), with a depth capability of 3,000 ft.

The head unit of the 678c HD XD is similar to the other fish finders from the 600 series, featuring a full color, 5-inch diagonal screen, 480H x 640V pixel resolution, with backlight, providing high-definition images, easy to read even in extreme sunlight.

The main sonar of the 678c HD XD is DualBeam Plus, which allows you to scan the water in two modes, with a narrow 20° / 200 kHz beam, for high-accuracy returns, or with a wider beam for a larger coverage, of 60° / 83 kHz.

The XD sonar operates at 50 kHz, with a coverage of 74°. SwitchFire view and split-screen mode are also included. However, this unit does not support sonar recording and does not have screen snapshot options, but there is the possibility of image freeze.

This unit has a power output of 1,000 Watts (RMS), 8,000 Watts (PTP). The standard transducer for this unit is the Transom XNT 9 DB 74 T.

The list of fish finding capabilities of this unit also includes temperature measuring, temperature alarm, and the selective Fish ID+ view.

Hummingbird Fish Finder 688ci HD Combo Review

Hummingbird Fish Finders - 688ci HD Combo

Humminbird 688ci HD Combo

The Humminbird 688ci HD Combo is another unit with an excellent price / quality ratio. It’s the unit that comes to take the place of the similar, discontinued units, 788ci HD Combo and 587ci HD Combo.

This fish finder has the same screen format as the other other units within the 600 series, 5-inches in diagonal, 640V x 480H pixel resolution, high definition, full color with backlight. Has a power output of 500 Watts RMS / 4,000 PTP, being equipped with a Transom XNT 9 20 T standard transducer. It comes with a standard Quick Disconnect mounting kit, but can also be mounted on an In-Dash, optional mounting kit.

Also, similar to the other 600 series units, the 688ci HD Combo has Dual Beam Plus sonar, which can be operated in two modes, separately or simultaneously, for a 200 kHz / 20° or 83 kHz / 60°, with a depth capability of 1,500 ft. Although this unit does not support Side Imaging, Down Imaging or 360 Imaging, it does have SwitchFire, and still pretty much has all the standard features needed by any angler to measure depth, track fish, assess the shape of the bottom and know the water temperature.

Regarding its navigational capabilities, this unit has precision GPS, chartplotting and trackplotting, and comes with the UniMap cartography package built-in, which covers the contiguous U.S. coastline and inland waters at 30m / pixel. The unit can be upgraded though, with a SD card for Lakemaster or Navionics Gold/Hotmaps, but does not support Navionics Platinum + or C-Map. Its memory can store up to 2,500 waypoints, 45 routes and 50 tracks / 20,000 points each.

Hummingbird Fish Finder 678c HD Review

Hummingbird Fish Finders - 678c HD

Humminbird 678c HD

The Humminbird 678c HD is currently the most basic fish finder in the 600 series. It’s also the cheapest one, but despite the fact it doesn’t support any navigational features or superior sonar technology such as Side Imaging, Down Imaging or 360 Imaging, this model still is quite a reliable one.

Just like the other units in the 600 series, the 678c HD comes with a 5-inch diagonal display, 480 x 640 pixel resolution, full color TFT and backlit screen. The head unit comes with the standard Quick Disconnect Mounting Kit, but can be fixed on your boat with an In-Dash Mounting Kit. Has a power output of 500 Watts RMS / 4,000 Watts PTP, with a depth capability for 1,500 ft.

Regarding its sonar capabilities, this fish finder has Dual Beam Plus sonar, that can be operated at two frequencies: 83 kHz with a 60° beam, for a wider coverage, and 200 kHz with a 20° beam for a narrower but more accurate sonar scan. The standard transducer of the 678c HD fish finder is the Transom XNT 9 20 T. SwitchFire and Fish ID + view options are also included.

Although for other units the PC connect feature is optional, this fish finder has it included.

Hummingbird Fish Finder 678c HD DI Review

Hummingbird Fish Finders - 678c HD DI

Humminbird 678c HD DI

This is one of the cheapest units of the new, 600 series, Hummingbird fish finders with Down Imaging. Although it does not have too many navigational options, the Humminbird 678c HD DI sure covers pretty much everything a fish finder should.

Like most units within the Humminbird 600 series, this one comes with a 5-inch diagonal screen, 640 x 480 pixel resolution. It’s a full color unit, with LED backlit screen, making the readings quite easy during night fishing.

Comes with Dual Beam Plus sonar, SwitchFire and High Definition Down Imaging technology. The DI beams can be operated at two frequencies: 455 kHz / 75° or 800 kHz / 45° for a more focused view, being able to scan depths up to 350ft. The transducer of the 678c HD DI also uses traditiona, 2D view with two narrower beams, of 16° / 455 kHz , or 25° / 200 kHz. The 2D, traditional imaging works for depths up to 600 ft. The standard transducer of this unit is the Transom XNT 9 DI T.

The 678c HD DI unit has a PTP power output of 4,000 Watts (500 Watts / RMS). It does not support any type of chartplotting, in other words, cannot be upgraded with any Lakemaster or Navionics mapping package. Also, does not have any built-in cartography, such as the 698ci HD SI Combo or 688ci HD Combo.

The box also contains the Quick Disconnect mounting system, but it can work with an in-Dash Mounting system as well. However, the second one is optional.

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